Choose the closest paraphrased version for the sentence or italicized part.
Food was short: his vegetable garden became less a hobby than a necessity.（）
A、
Due to lack of food, it was necessary for him to plant vegetables.
B、
He used to plant vegetables as a hobby. Now because of lack of food, it became his necessary labor.
C、
Planting vegetables was not his hobby, but he had to work in his garden.
D、
Without enough food, he had to plant vegetables in his garden.
【正确答案】：B
【题目解析】：
食品短缺，在园子里种种菜就不再是嗜好，而是成为必要的劳动了… 选自下册第四课 Zero Hour: Forty-Three Seconds over Hiroshima